Environmentally friendly; relating to ecology or sustainability.

• Economical mode or feature that reduces power or resource use.

环保的；与生态或可持续性有关。

• 节能或经济模式与功能，降低能耗或资源使用。

Proposed common currency of the West African Monetary Zone under ECOWAS.

西非货币区在西非经共体框架下拟推出的共同货币。

Abbreviation of engine cut-off in rocketry, when engines shut down.

• Initialism for eternally collapsing object in theoretical astrophysics.

火箭领域中“发动机切断”的缩写，指发动机关闭时刻。

• 理论天体物理中“永恒塌缩体”的首字母缩写。